EP1832045A1 - Connection reservation in a communication interface - Google Patents

Connection reservation in a communication interface

Info

Publication number
EP1832045A1
EP1832045A1 EP05817453A EP05817453A EP1832045A1 EP 1832045 A1 EP1832045 A1 EP 1832045A1 EP 05817453 A EP05817453 A EP 05817453A EP 05817453 A EP05817453 A EP 05817453A EP 1832045 A1 EP1832045 A1 EP 1832045A1
Authority
EP
European Patent Office
Prior art keywords
transport
capacity
physical channel
bearers
network element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05817453A
Other languages
German (de)
French (fr)
Other versions
EP1832045B1 (en
EP1832045A4 (en
Inventor
Jari Isokangas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Oyj
Nokia Inc
Original Assignee
Nokia Oyj
Nokia Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Oyj, Nokia Inc filed Critical Nokia Oyj
Publication of EP1832045A1 publication Critical patent/EP1832045A1/en
Publication of EP1832045A4 publication Critical patent/EP1832045A4/en
Application granted granted Critical
Publication of EP1832045B1 publication Critical patent/EP1832045B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/082—Load balancing or load distribution among bearers or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5629—Admission control
    • H04L2012/5631—Resource management and allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5646—Cell characteristics, e.g. loss, delay, jitter, sequence integrity
    • H04L2012/5652—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
    • H04L2012/5653—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly using the ATM adaptation layer [AAL]
    • H04L2012/5656—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly using the ATM adaptation layer [AAL] using the AAL2
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

Definitions

  • a geographical area covered by a radio access network is divided into cells defining a radio coverage provided by a transceiver network element, such as a Node B.
  • a single transceiver network element may serve a number of cells.
  • a plurality of transceiver network elements is typically connected to a controller network element, such as a radio network controller (RNC).
  • RNC radio network controller
  • the logical interface between an RNC and a Node B, as defined by the third generation partnership project (3GPP), is called as an lub interface.
  • Physical channels are transmission channels, such as radio channels, provided between transmitters and receivers.
  • a transport channel defines characteristics, such as coding, interleaving and mapping onto physical channels, with which data is transported over the air interface.
  • a logical channel is an information stream for a particular type of information carried by a transport channel.
  • WCDMA Wideband code division multiple access
  • transfer modes may comprise circuit mode, packet mode, frame mode and cell mode.
  • the circuit mode is used, for example, in the PSTN and the GSM.
  • the packet mode is used, for example, in the IP networks and in the GPRS.
  • the frame mode may be used, for example, to interconnect local are networks (LANs).
  • the cell mode comprises, for example, Asynchronous Transfer Mode (ATM).
  • ATM Asynchronous Transfer Mode
  • the header thus includes a virtual channel identifier (VCI) and a virtual path identifier (VPI) identifying a connection in the ATM network.
  • VCI virtual channel identifier
  • VPN virtual path identifier
  • a virtual path is a path between two network nodes and a virtual channel is a route for a specific connection on the virtual path.
  • the physical transmission medium such as an optical fibre, carries several virtual paths.
  • ATM switching may be used.
  • downlink Common Transport Channels such as a Forward Access Channel (FACH) and a Paging Channel (PCH)
  • FACH Forward Access Channel
  • PCH Paging Channel
  • each lub FACH data stream is carried on one transport bearer and for each FACH in a cell, a transport bearer must be established over the lub interface, as defined in the 3GPP TS 25.430 V3.6.0 (2001-06), Third Generation Partnership Project; Technical Specification Group Radio Access Network; UTRAN lub Interface: General Aspect and Principles (Release 1999), paragraph 4.5.1.
  • PCH PCH, DSCH, High Speed Downlink Shared Channel (HS-DSCH) and Uplink Shared Channel (USCH) data streams.
  • HS-DSCH High Speed Downlink Shared Channel
  • USCH Uplink Shared Channel
  • Patent Application US 2002/0181470 A1 proposes a solution for bandwidth efficient quality of service separation of AAL2 traffic.
  • bandwidth of an individual AAL2 path comprising an AAL2 path group is contributed to a total bandwidth of the AAL2 path group rather than to the individual AAL2 path exclusively.
  • An admission decision regarding a connection seeking to use an AAL2 path belonging to the AAL2 path group is based on available bandwidth of the AAL2 path group rather than available bandwidth of an individual AAL2 path.
  • ATM VCCs which comprise the AAL2 path group, are transported on a virtual path together with ATM VCCs of a different type.
  • the total need may be defined as a sum of transport capacities potentially used simultaneously by the transport bearers sharing the physical channel.
  • a dedicated connection may be established for reserving said transport bearer capacity from the physical channel.
  • Figure 2 shows the lub interface protocol structure
  • Common transport channel data streams in the UTRAN lub interface are further defined in 3GPP TS 25.434 V6.1.0 (2004-03).
  • AAL2 capacity from a virtual channel connection (VCC) of an lub interface is reserved based on a capacity of physical channels (such as the SCCPCH or PDSCH) shared by several AAL2 connections. Said total need may be defined for an AAL2 capacity for a set of common transport channels sharing a physical channel over the lub interface between a controller network element and at least one transceiver network element.
  • VCC virtual channel connection
  • the FP control frames transmit information on protocols used in a connection, power management information and other control information.
  • the FP control frames may need to be transmitted between a controller network element and a transceiver network element even if the actual transport bearer is inactive, that is, the actual transport bearer is not scheduled.
  • said total need may thus be defined as a sum of a transport capacity of a transport bearer having the highest bit rate among the set of transport bearers and a transport capacity needed for frame protocol control frames of the other transport bearers of the set.
  • the pseudo connection may be applicable, in particular, for DSCH type of channels, where physical reservation can exist without an actual transport bearer.
  • Embodiments of the invention may be implemented at least in part by means of a computer program comprising program code means for performing any of the steps according to embodiments of the invention when the program is run on a computing means.
  • the computing means may be comprised in an appropriate network element of the communication system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method distributes transport bearer capacity in a communication system. The method comprises defining a total need for transport capacity for a set of transport bearers sharing a physical channel. The method also comprises reserving transport bearer capacity from the physical channel based on total need. The method also comprises distributing transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel Furthermore, a network entity for a communication system and a communication system are configured to execute the method.

Description

Connection reservation in a communication interface
Field of the invention
The invention relates to communication systems, and, in particular, to connection reservation in a communication interface.
Background of the invention
A communication system can be seen as a facility that enables communications between two or more entities such as a communication device, e.g. mobile stations (MS) or user equipment (UE), and/or other network elements or nodes, e.g. Node B or base transceiver station (BTS), associated with the communication system. A communication system typically operates in accordance with a given standard or specification which sets out what the various entities associated with the communication system are permitted to do and how that should be achieved.
Wireless communication systems include various cellular or otherwise mobile communication systems using radio frequencies for sending voice or data between stations, for example between a communication device and a transceiver network element. Examples of wireless communication systems may comprise public land mobile network (PLMN), such as global system for mobile communication (GSM), the general packet radio service (GPRS) and the universal mobile telecommunications system (UMTS).
A mobile communication network may logically be divided into a radio access network (RAN) and a core network (CN). The core network entities typically include various control entities and gateways for enabling communication via a number of radio access networks and also for interfacing a single communication system with one or more communication systems, such as with other wireless systems, such as a wireless Internet Protocol (IP) network, and/or fixed line communication systems, such as a public switched telephone network (PSTN). Examples of radio access networks may comprise the UMTS terrestrial radio access network (UTRAN) and the GSM/EDGE radio access network (GERAN).
A geographical area covered by a radio access network is divided into cells defining a radio coverage provided by a transceiver network element, such as a Node B. A single transceiver network element may serve a number of cells. A plurality of transceiver network elements is typically connected to a controller network element, such as a radio network controller (RNC). The logical interface between an RNC and a Node B, as defined by the third generation partnership project (3GPP), is called as an lub interface.
Physical channels are transmission channels, such as radio channels, provided between transmitters and receivers. A transport channel defines characteristics, such as coding, interleaving and mapping onto physical channels, with which data is transported over the air interface. A logical channel is an information stream for a particular type of information carried by a transport channel. Wideband code division multiple access (WCDMA) is an example of a channel multiplexing technique for mapping transport channels onto physical channels in a 3GPP network.
In different communication systems, different transfer modes may be used. Examples of transfer modes may comprise circuit mode, packet mode, frame mode and cell mode. The circuit mode is used, for example, in the PSTN and the GSM. The packet mode is used, for example, in the IP networks and in the GPRS. The frame mode may be used, for example, to interconnect local are networks (LANs). The cell mode comprises, for example, Asynchronous Transfer Mode (ATM).
Asynchronous Transfer Mode (ATM) is a cell-based technique for multiplexing and transfer of information used, for example, in the UTRAN. In the ATM, an information flow with different and varying bit rates, comprising different services, such as voice, data and video, is organised into one common cell flow. ATM uses fixed-length cells of 53 bytes having a cell header of five octets and a user part, also called payload, of 48 octets. ATM creates fixed logical channels between two points when data transfer begins. The logical channels are identified by an address in the cell header. The address is divided into two levels, virtual channels (VC) and virtual paths (VP). The header thus includes a virtual channel identifier (VCI) and a virtual path identifier (VPI) identifying a connection in the ATM network. A virtual path is a path between two network nodes and a virtual channel is a route for a specific connection on the virtual path. The physical transmission medium, such as an optical fibre, carries several virtual paths.
In the ATM, a protocol reference model defines layers of the ATM. The lowest layer is a physical layer transporting the ATM cells created in a layer above, in an ATM layer. Above the ATM layer, an ATM adaptation layer (AAL) maps bit streams from higher layers onto the ATM layer. The AAL comprises different protocols, namely AALO, AAL1 , AAL2, AAL3/4 and AAL5, for example, for supporting different service classes. The purpose of the AAL2, i.e. the ATM adaptation layer type 2, is to realise connections of variable bit rate on a common AAL2 virtual path. The AAL2 establishes an ATM virtual channel connection (VCC).
In the 3GPP WCDMA UTRAN, ATM switching may be used. For example, downlink Common Transport Channels, such as a Forward Access Channel (FACH) and a Paging Channel (PCH), each typically have a separate transport bearer, that is, a dedicated AAL2 connection over the lub interface. In other words, for example relating to the FACH, one lub FACH data stream is carried on one transport bearer and for each FACH in a cell, a transport bearer must be established over the lub interface, as defined in the 3GPP TS 25.430 V3.6.0 (2001-06), Third Generation Partnership Project; Technical Specification Group Radio Access Network; UTRAN lub Interface: General Aspect and Principles (Release 1999), paragraph 4.5.1.
For a reliable transport for each common transport channel over the lub interface, an AAL2 connection for each common transport channel is usually reserved based on the maximum bit rate of the channel. However, the common transport channels can use a single control channel, such as a Secondary Common Control Physical Channel (SCCPCH), over the air interface depending on the physical channel configuration used. Thus, the common channels cannot all send using the maximum bit rate configured for each channel in a single time interval (TTI). Scheduling, or admission control, of the SCCPCH may be managed by a medium access control - common/shared channel (MAC-C/SH) entity in an RNC, ensuring that the amount of traffic send by the RNC to a transceiver network element does not exceed the capacity of the control channel the common channels in question are using. If an AAL2 connection is reserved for all the common channels based on the configured maximum bit rate, some of the transport capacity may be unnecessarily reserved. This may lead to inefficient usage of available transport resources over the lub interface.
Similar situation may arise, for example, when a Downlink Shared Channel (DSCH) concept is used. Each transport bearer is provided by a separate AAL2 connection over the lub interface. A MAC-C/SH handles the scheduling and ensures that the capacity of a Physical Downlink Shared Channel (PDSCH) is not exceeded. However, each of the user data streams carried over the separate AAL2 connections can use momentarily the whole capacity of the PDSCH. Thus, the AAL2 connections over the lub interface need to be reserved based on the maximum bit rate of an individual user data stream. This again may lead to inefficient usage of transport resources over the lub.
For other channels, similar conditions may apply. In accordance with 3GPP TS 25.434 V6.1.0 (2004-03), Third Generation Partnership Project; Technical Specification Group Radio Access Network; UTRAN lub Interface Data Transport and Transport Signalling for Common Transport Channel Data Streams (Release
6), paragraph 5.2, ATM and AAL2 may be used at the standard transport layer for lub Random Access Channel (RACH), Common Packet Channel (CPCH), FACH,
PCH, DSCH, High Speed Downlink Shared Channel (HS-DSCH) and Uplink Shared Channel (USCH) data streams.
It shall be appreciated that these issues are not limited to any particular communication environment, but similar issues may occur in other communication systems as well.
Patent Application US 2002/0181470 A1 proposes a solution for bandwidth efficient quality of service separation of AAL2 traffic. In the US 2002/0181470 A1 , bandwidth of an individual AAL2 path comprising an AAL2 path group is contributed to a total bandwidth of the AAL2 path group rather than to the individual AAL2 path exclusively. An admission decision regarding a connection seeking to use an AAL2 path belonging to the AAL2 path group is based on available bandwidth of the AAL2 path group rather than available bandwidth of an individual AAL2 path. ATM VCCs, which comprise the AAL2 path group, are transported on a virtual path together with ATM VCCs of a different type.
It might be desired to be able to reserve AAL2 capacity in the lub based on a real usage of AAL2 resources in the lub. This might help to avoid unnecessary reservations of transport resources. This might increase efficiency of a use of transport resources in the lub interface.
Summary of the invention
Embodiments of the invention aim to address one or several of the above problems or issues.
In accordance with an aspect of the invention, there is provided a method for distributing transport bearer capacity in a communication system. The method comprises defining a total need for transport capacity for a set of transport bearers sharing a physical channel. The method further comprises reserving transport bearer capacity from the physical channel based on said total need. The method further comprises distributing transport bearer capacity to at least, one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
In accordance with another aspect of the invention, there is provided a network element for a communication system. The network element is configured to define a total need for transport capacity for a set of transport bearers sharing a physical channel. The network element is further configured to reserve transport bearer capacity from the physical channel based on said total need. The network element is further configured to distribute transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
In accordance with another aspect of the invention, there is provided a network element for a communication system. The network element comprises defining means for defining a total need for transport capacity for a set of transport bearers sharing a physical channel. The network element further comprises reserving means for reserving transport bearer capacity from the physical channel based on said total need. The network element further comprises distributing means for distributing transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
In accordance with another aspect of the invention, there is provided a communication system. The communication system is configured to define a total need for transport capacity for a set of transport bearers sharing a physical channel. The communication system is further configured to reserve transport bearer capacity from the physical channel based on said total need. The communication system is further configured to distribute transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
In accordance with another aspect of the invention, there is provided a communication system. The communication system comprises defining means for defining a total need for transport capacity for a set of transport bearers sharing a physical channel. The communication system further comprises reserving means for reserving transport bearer capacity from the physical channel based on said total need. The communication system further comprises distributing means for distributing transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
In an embodiment, the total need may be defined as a sum of transport capacities potentially used simultaneously by the transport bearers sharing the physical channel.
In an embodiment, the total need may be defined as a sum of a transport capacity of a transport bearer having the highest bit rate among the set of transport bearers and a transport capacity needed for frame protocol control frames of the other transport bearers of the set.
In an embodiment, a dedicated connection may be established for reserving said transport bearer capacity from the physical channel.
In an embodiment, a total need may be defined for an asynchronous transfer mode adaptation layer 2 capacity for a set of common transport channels sharing a physical channel over an lub interface between a controller network element and at least one transceiver network element.
Brief description of figures
The invention will now be described in further detail, by way of example only, with reference to the following examples and accompanying drawings, in which:
Figure 1 shows an exemplifying architecture of a system in which the embodiments of the invention may be implemented;
Figure 2 shows the lub interface protocol structure; and
Figure 3 shows a flow chart illustrating an embodiment of the invention.
Detailed description of the preferred embodiments
Figure 1 shows an exemplifying architecture of a system in which the embodiments of the invention may be implemented. A communication network 10 may be accessed via a radio access network (RAN) comprising a controller network element, such as a radio network controller (RNC) 12, and one or more transceiver network elements, such as a Node B 14, controlled by the RNC 12. The lub interface 16 is shown between the RNC 12 and the Node B 14. The lub interface uses AAL2 connections as transport bearers for providing transport channels. In an embodiment, the RAN may be provided by the UTRAN. In an embodiment, the communication network 10 may be provided at least in part by a third generation network, such as the UMTS.
It shall be appreciated that Figure 1 is only an example of a simplified communication system using at least in part ATM switching. The number, type and order of the entities may differ substantially from the shown. It shall also be appreciated that the terms used in the context of Figure 1 refer to the 3G mobile communication systems as defined by the 3GPP. In the second generation (2G) mobile communication systems, such as the GSM, the transceiver network element is typically called a base transceiver station (BTS) or simply base station and a controller network element is typically called a base station controller (BSC).
Figure 2 shows the lub interface protocol structure as defined in 3GPP TS 25.430 V3.6.0 (2001-06), paragraph 7. Only the parts of the lub interface protocol structure needed to understand the invention are shown in Figure 2. As shown in
Figure 2, the lub protocol architecture consists of a radio network layer 22 and a transport layer 23. The radio network layer 22 defines procedures related to the operation of Node B and consists of a radio network control plane 24 and a user plane 26. The transport layer 23 defines procedures for establishing physical connections between Node B and the RNC. The transport layer 23 consists of the radio network control plane 24, a transport network control plane 25 and the user plane 26. As defined in 3GPP TS 25.430 V3.6.0 (2001-06), paragraph 7, there shall be one dedicated AAL2 connection 27 for each RACH (Random Access Channel), one for each FACH (Forward Access Channel) transport channel, and one for each CPCH (Common Packet Channel).
Common transport channel data streams in the UTRAN lub interface are further defined in 3GPP TS 25.434 V6.1.0 (2004-03).
Embodiments of the invention define schemes for reserving transport bearer capacity in physical channels shared by several transport bearers. It has now been found that the transport bearer capacity may be reserved in a physical channel based on a total need of all the transport bearers sharing the physical channel for transport capacity. The total need may be defined as a sum of transport capacities potentially used simultaneously by the transport bearers sharing the physical channel for transport capacity. Figure 3 shows a flow chart illustrating an embodiment of the invention. In step 302, a total need for transport capacity for a set of transport bearers sharing a physical channel is defined. In step 304, transport bearer capacity is reserved from the physical channel based on said total need. In step 306, transport bearer capacity is distributed to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
In an embodiment, AAL2 capacity from a virtual channel connection (VCC) of an lub interface is reserved based on a capacity of physical channels (such as the SCCPCH or PDSCH) shared by several AAL2 connections. Said total need may be defined for an AAL2 capacity for a set of common transport channels sharing a physical channel over the lub interface between a controller network element and at least one transceiver network element.
In an embodiment, a first transport bearer, such as a first AAL2, may be reserved for a transport channel having the highest bit rate. The highest bit rate may be as high as the total capacity of the physical channel, which is to be shared. For the other transport channel(s) sharing the same physical channel, transport bearer reservation may be done based on a need of Frame Protocol (FP) control frames.
The FP control frames transmit information on protocols used in a connection, power management information and other control information. The FP control frames may need to be transmitted between a controller network element and a transceiver network element even if the actual transport bearer is inactive, that is, the actual transport bearer is not scheduled. In this embodiment, said total need may thus be defined as a sum of a transport capacity of a transport bearer having the highest bit rate among the set of transport bearers and a transport capacity needed for frame protocol control frames of the other transport bearers of the set.
In a further embodiment, first a dedicated connection, or a so-called pseudo AAL2 connection, may be established to reserve transport resources from the physical channel. The pseudo AAL2 connection may be established based on a maximum transport capacity of the physical channel. The pseudo AAL2 connection may thus reserve all of the maximum transport capacity of the physical channel. In an alternative, only a part of the maximum transport capacity of the physical channel is reserved for the pseudo AAL2 connection. In an embodiment, the pseudo AAL2 connection may be established when a first actual user data stream is established. If the first actual user data stream does not use all of the transmission resources reserved for the pseudo AAL2 connection, the subsequent user data streams may then use the transport capacity remaining in the pseudo AAL2 connection.
It shall be appreciated that, especially with regard to common channels, it may be sufficient to ensure that total amount of reserved AAL2 capacity matches with reserved physical capacity. The pseudo connection may be applicable, in particular, for DSCH type of channels, where physical reservation can exist without an actual transport bearer.
A further embodiment uses the High Speed Downlink Shared Channel (HS-DSCH) with High Speed Downlink Packet Access (HSDPA). In this embodiment, scheduling and admission control for transport bearer towards the transceiver network element is centralised in the RNC site. Thus, it can be ensured that the sum of separate AAL2 connections (MAC-d flows) does not continuously exceed the reserved AAL2 capacity. Exceeding the sum of separate AAL2 connections would jeopardise the quality of service (QoS) of other transport bearers using the same transport resources.
With embodiments of the invention, AAL2 capacity for the lub may be reserved based on the real usage of AAL2 resources in the lub. Unnecessary reservations of transport resources may be avoided and the efficiency of transport resource usage in the lub interface may be increased.
Embodiments of the invention may be implemented at least in part by means of a computer program comprising program code means for performing any of the steps according to embodiments of the invention when the program is run on a computing means. The computing means may be comprised in an appropriate network element of the communication system.
Although the invention has been described in the context of particular embodiments, various modifications are possible without departing from the scope and spirit of the invention as defined by the appended claims. For example, the communication system, wherein the invention may be implemented, may be another appropriate communication system in which more than one transport bearers share one physical channel.

Claims

Claims
1. A method for distributing transport bearer capacity in a communication system, the method comprising: defining a total need for transport capacity for a set of transport bearers sharing a physical channel; reserving transport bearer capacity from the physical channel based on said total need; and distributing transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
2. The method according to claim 1 , wherein the step of defining comprises defining the total need as a sum of transport capacities potentially used simultaneously by the transport bearers sharing the physical channel.
3. The method according to claim 1 or 2, wherein the step of defining comprises defining the total need as a sum of a transport capacity of a transport bearer having a highest bit rate among the set of transport bearers and a transport capacity needed for frame protocol control frames of remaining transport bearers of the set.
4. The method according to any of claims 1 to 3, wherein the step of reserving comprises establishing a dedicated connection for reserving said transport bearer capacity from the physical channel.
5. The method according to any of claims 1 to 4, wherein the step of defining comprises defining the total need for an asynchronous transfer mode adaptation layer 2 capacity for a set of common transport channels sharing a physical channel over an lub interface between a controller network element and at least one transceiver network element.
6. A computer program comprising program code means for performing any of the steps according to any of claims 1 to 5 when the program is run on a computing means.
7. A network element for a communication system, the network element configured to: define a total need for transport capacity for a set of transport bearers sharing a physical channel; reserve transport bearer capacity from the physical channel based on said total need; and distribute transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
8. The network element according to claim 7, further configured to define the total need as a sum of transport capacities potentially used simultaneously by the transport bearers sharing the physical channel.
9. The network element according to claim 7 or 8, further configured to define the total need as a sum of a transport capacity of a transport bearer having the highest bit rate among the set of transport bearers and a transport capacity needed for frame protocol control frames of remaining transport bearers of the set of transmission bearers.
10. The network element according to any of claims 7 to 9, further configured to establish a dedicated connection for reserving said transport bearer capacity from the physical channel.
11. The network element according to any of claims 7 to 10, further configured to define the total need for an asynchronous transfer mode adaptation layer 2 capacity for a set of common transport channels sharing a physical channel over an lub interface between a controller network element and at least one transceiver network element.
12. A network element for a communication system, the network element comprising: defining means for defining a total need for transport capacity for a set of transport bearers sharing a physical channel; reserving means for reserving transport bearer capacity from the physical channel based on said total need; and distributing means for distributing transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
13. The network element according to claim 12, wherein at least one of the defining means, the reserving means and the distributing means comprises a computer program according to claim 6.
14. A communication system configured to: define a total need for transport capacity for a set of transport bearers sharing a physical channel; reserve transport bearer capacity from the physical channel based on said total need; and distribute transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
15. A communication system comprising: defining means for defining a total need for transport capacity for a set of transport bearers sharing a physical channel; reserving means for reserving transport bearer capacity from the physical channel based on said total need; and distributing means for distributing transport bearer capacity to at least one individual transport bearer of the set of transport bearers from the transport bearer capacity reserved from the physical channel.
EP05817453A 2004-12-27 2005-11-23 Connection reservation in a communication interface Expired - Lifetime EP1832045B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20041672A FI20041672A0 (en) 2004-12-27 2004-12-27 Reservation of connection in a communication interface
PCT/FI2005/000501 WO2006070049A1 (en) 2004-12-27 2005-11-23 Connection reservation in a communication interface

Publications (3)

Publication Number Publication Date
EP1832045A1 true EP1832045A1 (en) 2007-09-12
EP1832045A4 EP1832045A4 (en) 2011-10-05
EP1832045B1 EP1832045B1 (en) 2013-01-16

Family

ID=33548032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05817453A Expired - Lifetime EP1832045B1 (en) 2004-12-27 2005-11-23 Connection reservation in a communication interface

Country Status (5)

Country Link
US (1) US8023456B2 (en)
EP (1) EP1832045B1 (en)
KR (1) KR100905942B1 (en)
FI (1) FI20041672A0 (en)
WO (1) WO2006070049A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101296171B (en) * 2007-04-25 2012-04-18 华为技术有限公司 A method and system for establishing bearer
KR100922690B1 (en) 2007-08-14 2009-10-19 연세대학교 산학협력단 Bearer Control Method for Multi-layer Data Transmission
US7948962B2 (en) * 2007-08-31 2011-05-24 Wireless Technology Solutions Llc Cellular communication system, apparatus and method for management of backhaul resources
ES2336998B1 (en) * 2008-10-16 2011-02-07 Vodafone España, S.A.U. METHOD FOR ASSIGNING BANDWIDTH IN THE IUB INTERFACE CALL ADMISSION CONTROL.
US10014927B2 (en) 2015-03-31 2018-07-03 International Business Machines Corporation Parallel route reservation for wireless technologies

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6173162B1 (en) * 1997-06-16 2001-01-09 Telefonaktiebolaget Lm Ericsson (Publ) Multiple code channel power control in a radio communication system
CA2326750C (en) * 1998-04-03 2010-03-16 Telefonaktiebolaget Lm Ericsson Flexible radio access and resource allocation in a universal mobile telephone system (umts)
US6577613B1 (en) * 1999-03-02 2003-06-10 Verizon Corporate Services Group Inc. Method and apparatus for asynchronous reservation-oriented multiple access for wireless networks
EP1119213B1 (en) * 2000-01-19 2007-07-11 Lucent Technologies Inc. Radio resource allocation method
ATE271291T1 (en) * 2000-05-06 2004-07-15 Nokia Corp SYSTEM FOR IMPROVED RESOURCE MANAGEMENT FOR ATM NETWORK CONNECTIONS
US6990089B2 (en) * 2000-12-12 2006-01-24 Telelec Methods and systems for routing messages in a radio access network
FR2821515B1 (en) * 2001-02-23 2003-05-23 Cit Alcatel METHOD FOR MANAGING PROCESSING RESOURCES IN A MOBILE RADIO COMMUNICATION SYSTEM
US7230948B2 (en) * 2001-06-01 2007-06-12 Telefonaktiebolaget Lm Ericsson (Publ) Bandwidth efficient Quality of Service separation of AAL2 traffic
GB2382268B (en) * 2001-11-16 2005-07-13 Hutchison Whampoa Three G Ip Streaming sevices in radio networks
US7173907B1 (en) * 2002-07-23 2007-02-06 Sprint Communications Company L.P. Voice over ATM AAL2 bandwidth allocation methodology
US7889761B2 (en) * 2002-09-17 2011-02-15 Broadcom Corporation Method and system for providing bandwidth allocation and sharing in a hybrid wired/wireless network
FR2849337B1 (en) 2002-12-24 2005-04-29 Evolium Sas METHOD FOR TRANSPORTING NETWORK SIZING FOR A RADIO ACCESS NETWORK OF A MOBILE RADIOCOMMUNICATION NETWORK

Also Published As

Publication number Publication date
WO2006070049A1 (en) 2006-07-06
US20060140133A1 (en) 2006-06-29
KR100905942B1 (en) 2009-07-06
KR20070097551A (en) 2007-10-04
US8023456B2 (en) 2011-09-20
EP1832045B1 (en) 2013-01-16
FI20041672A0 (en) 2004-12-27
EP1832045A4 (en) 2011-10-05

Similar Documents

Publication Publication Date Title
CN101631068A (en) Method and device for implementing congestion control
EP1627501B1 (en) System and method for consistent forwarding of packets across wireless and wireline networks
EP1415500B1 (en) Bandwidth efficient quality of service separation of aal2 traffic
Wu et al. Dynamic slot allocation multiple access protocol for wireless ATM networks
KR100804289B1 (en) Method, system and network node for establishing or modifying sessions in a communication switching system
US20040136403A1 (en) Method for managing connection resources
EP1832045B1 (en) Connection reservation in a communication interface
US7327740B2 (en) Facilitating reliable connection admission control for telecommunications system using AAL2 signaling
US7746806B2 (en) Dimensioning methods for HSDPA traffic
Li Radio Access Network Dimensioning for 3G UMTS
Lorenz QoS in next generation networks
US20050276267A1 (en) Transmission control method, network element, base station and radio network controller
Li et al. Multimedia traffic management principles for guaranteed wireless network performance
US7283535B2 (en) Concentrator for user AAL2 traffic carried on UBR virtual channels
Nananukul et al. Simulation Studies of bandwidth Management for the ATM/AAL2 Transport in the UTRAN
Cheng et al. A two-stage queuing approach to support real-time QoS guarantee for multimedia services in TDMA wireless networks
Delli Priscoli MAC and interworking layers for an ATM wireless system
Heath et al. Virtual connection tree over multiple access techniques for 3G wireless communication systems
Marchent et al. Support of mobile multimedia over radio for a wide range of QoS and traffic profiles
Li et al. UMTS HSPA and R99 traffic separation
Fruscio et al. Evolving towards universal mobile telecommunication systems: development of a new system based on emerging technologies
Ng et al. Incorporating priority scheme in IPv6 over ATM networks
Malomsoky et al. Performance Evaluation of UMTS Terrestrial Radio Access Networks
KR20010003646A (en) atm traffic control apparatus and method for mobile communication system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070619

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20110902

RIC1 Information provided on ipc code assigned before grant

Ipc: H04L 12/24 20060101AFI20110829BHEP

Ipc: H04L 12/56 20060101ALI20110829BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602005037931

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: H04L0012240000

Ipc: H04W0028000000

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RIC1 Information provided on ipc code assigned before grant

Ipc: H04W 28/00 20090101AFI20121206BHEP

Ipc: H04W 28/26 20090101ALI20121206BHEP

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Ref country code: DE

Ref legal event code: R081

Ref document number: 602005037931

Country of ref document: DE

Owner name: NOKIA TECHNOLOGIES OY, FI

Free format text: FORMER OWNER: NOKIA CORP., 02610 ESPOO, FI

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 594428

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130215

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602005037931

Country of ref document: DE

Effective date: 20130314

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 594428

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130116

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130116

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130416

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130427

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130516

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130516

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130417

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20131017

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602005037931

Country of ref document: DE

Effective date: 20131017

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131130

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131130

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140731

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131202

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131123

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20051123

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602005037931

Country of ref document: DE

Owner name: NOKIA TECHNOLOGIES OY, FI

Free format text: FORMER OWNER: NOKIA CORPORATION, ESPOO, FI

Ref country code: DE

Ref legal event code: R081

Ref document number: 602005037931

Country of ref document: DE

Owner name: NOKIA TECHNOLOGIES OY, FI

Free format text: FORMER OWNER: NOKIA CORPORATION, 02610 ESPOO, FI

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180601

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602005037931

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190601

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602005037931

Country of ref document: DE

Owner name: WSOU INVESTMENTS, LLC, LOS ANGELES, US

Free format text: FORMER OWNER: NOKIA TECHNOLOGIES OY, ESPOO, FI